limit_denominator(max_denominator=1000000)
Finds and returns the closest Fraction to self that has denominator at most max_denominator. This method is useful for finding rational approximations to a given floating-point number:
>>>
>>> from fractions import Fraction
>>> Fraction('3.1415926535897932').limit_denominator(1000)
Fraction(355, 113)
它不应该像尝试a/999,b/998,c/997。。找到最佳近似值。在
fractions
模块是用Python编写的,您只需查看源代码即可。它包含以下注释。在相关问题 更多 >
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